[R-390] Tracking down low sensitivity 0 to 8 mhz problem

[Larry H]

Hi Gary,  C327 should be a 100 pf SM cap.  The SM cap gives the tuned
circuit a higher Q.

Regards, Larry

On Wed, Apr 3, 2024 at 4:16 PM <gary.biasini at shaw.ca> wrote:

> Jacques,
>
> Thanks.  What should the value be for C327?
>
> I am going to order some SM caps to replace mine and see if that helps.
>
> Regards,
>
> -----Original Message-----
> From: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> On
> Behalf Of Jacques Fortin
> Sent: Wednesday, April 3, 2024 2:20 PM
> To: 'Jordan Arndt' <Outposter30 at shaw.ca>; 'Larry H' <larry41gm at gmail.com>;
> 'Collins R-390 HF Receiver List' <r-390 at mailman.qth.net>
> Subject: Re: [R-390] Tracking down low sensitivity 0 to 8 mhz problem
> Importance: High
>
> AH !
> I warned you about the ceramic caps before.
> This is not a value or insulation problem.
> It's a DIELECTRIC LOSSES problem !
> I'm 100% sure that your original trouble came from that "ceramic" C327
> fitted there.
>
> 73, Jacques, VE2JFE in Montreal
>
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